CN113912890B - Preparation method of reflecting film - Google Patents
Preparation method of reflecting film Download PDFInfo
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- CN113912890B CN113912890B CN202111194849.3A CN202111194849A CN113912890B CN 113912890 B CN113912890 B CN 113912890B CN 202111194849 A CN202111194849 A CN 202111194849A CN 113912890 B CN113912890 B CN 113912890B
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
- C08J7/0423—Coating with two or more layers, where at least one layer of a composition contains a polymer binder with at least one layer of inorganic material and at least one layer of a composition containing a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/06—Coating with compositions not containing macromolecular substances
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
- C09D133/04—Homopolymers or copolymers of esters
- C09D133/06—Homopolymers or copolymers of esters of esters containing only carbon, hydrogen and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C09D133/10—Homopolymers or copolymers of methacrylic acid esters
- C09D133/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D167/00—Coating compositions based on polyesters obtained by reactions forming a carboxylic ester link in the main chain; Coating compositions based on derivatives of such polymers
- C09D167/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/004—Reflecting paints; Signal paints
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B5/00—Optical elements other than lenses
- G02B5/08—Mirrors
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2369/00—Characterised by the use of polycarbonates; Derivatives of polycarbonates
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2433/00—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers
- C08J2433/04—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters
- C08J2433/06—Characterised by the use of homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and only one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Derivatives of such polymers esters of esters containing only carbon, hydrogen, and oxygen, the oxygen atom being present only as part of the carboxyl radical
- C08J2433/10—Homopolymers or copolymers of methacrylic acid esters
- C08J2433/12—Homopolymers or copolymers of methyl methacrylate
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
Abstract
A method of making a reflective film comprising the steps of: (1) Preparing a reflective glue coating, and coating the prepared reflective glue coating on the corona surface of the PC substrate subjected to corona treatment; (2) Putting the coated film substrate obtained in the step (1) into an oven, and carrying out heat treatment for 2-6h at 80-100 ℃ to obtain a film matrix with a reflective coating; (3) Controlling the temperature of the film substrate at 60-70 ℃, and plating a metal reflecting layer on the reflecting coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate; (4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating an inorganic protective layer on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology. The reflecting film prepared by the invention has higher diffuse reflectance and more uniform brightness.
Description
Technical Field
The invention relates to a preparation method of a reflecting film.
Background
Liquid Crystal Display (LCD) has become the most common display technology in use today. The LCD cannot emit light by itself, and the display function can be realized by the backlight module. Therefore, the backlight module is one of the key components of the lcd panel. The backlight module comprises a light source, a light guide plate, a reflecting film, a diffusion film, a brightness enhancement film and the like. The reflecting film is arranged at the bottommost layer of the backlight module and mainly used for reflecting light rays emitted by the light source to the light emitting direction of the backlight module, so that the light ray utilization rate is improved, the light loss is reduced, and the aims of improving the brightness of the backlight module and saving energy are fulfilled. When the traditional reflecting film with the micro-bubble structure in the middle layer is applied to a short OD (OD distance of 15-18 mm) backlight module, the shadow phenomenon is easy to occur.
Disclosure of Invention
In order to overcome the defects of the existing reflecting film, the invention provides the preparation method of the reflecting film, and the prepared reflecting film has higher diffuse reflectance and more uniform brightness.
The technical scheme for solving the technical problem is as follows: a method of making a reflective film comprising the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
14-17 parts of polar polymer
3.5-6 parts of non-polar polymer
3-9 parts of compatilizer
2.5-4 parts of inorganic particles with the particle size of 5-15um
5-8 parts of dispersant
50-66 parts of a solvent;
(2) Putting the coated film substrate obtained in the step (1) into an oven, and carrying out heat treatment for 2-6h at 80-100 ℃ to obtain a film matrix with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating a metal reflecting layer on the reflecting coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating an inorganic protective layer on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology.
Preferably, the polar polymer is one of optical grade PMMA and optical grade PET;
the non-polar polymer is PS;
the compatilizer is one of PS-g-PMMA, PS-b-PMMA, PC-g-PS and PS-b-PC;
the inorganic particles are rutile titanium dioxide particles;
the dispersing agent is one of sodium oleate, polyvinyl butyral and polyethylene glycol;
the solvent is one of tetrahydrofuran, trichloromethane, dichloromethane, dichloroethane, N-dimethylformamide and dichloroethane.
Preferably, the metal reflective layer is Al or Ag.
Preferably, the inorganic protective layer is SiO 2 、SiO、MaF 2 One kind of (1).
The invention has the beneficial effects that: 1. part of light is directly reflected on the surface of the film and returns to the light guide plate, and part of light enters the film and returns to the light guide plate after being reflected, refracted and scattered for multiple times; the superposition of the two effects greatly improves the reflectivity of the film, and particularly when the inorganic particles adopt rutile titanium dioxide, the rutile titanium dioxide has compact crystal structure, high refractive index and large difference with the refractive index of matrix resin, so that a high-reflectivity interface can be obtained. 2. The polar and nonpolar polymers are separated to form a sea-island structure, so that the roughness of the surface of the film is greatly improved, more light rays are subjected to diffuse reflection, the brightness of the whole backlight module is more uniform, and the generation of LED lamp shadows in use is avoided.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
In a first embodiment, a method for preparing a reflective film includes the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical grade PMMA 15 parts
PS 5 parts
6 parts of PS-g-PMMA
Rutile type titanium dioxide particle 3.5 parts, particle diameter 5-15um
6 portions of sodium oleate
55 parts of tetrahydrofuran;
(2) Putting the coated film base material obtained in the step (1) into an oven, controlling the temperature between 80 and 100 ℃, and carrying out heat treatment for 4 hours to obtain a film base body with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Al layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating SiO on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology 2 And (3) a layer.
In a second embodiment, a method for preparing a reflective film includes the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical grade PET 14 parts
PS 6 parts
9 parts of PS-b-PMMA
2.5 parts of rutile type titanium dioxide particles with the particle size of 5-15um
Polyvinyl butyral 8 parts
60 parts of trichloromethane;
(2) Putting the coated film base material obtained in the step (1) into an oven, controlling the temperature between 80 and 100 ℃, and carrying out heat treatment for 2 hours to obtain a film base body with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Ag layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating an SiO layer on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology.
In a third embodiment, a method for manufacturing a reflective film includes the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical PMMA 15.5 parts
PS 4.5 parts
5 portions of PC-g-PS
2.6 parts of rutile type titanium dioxide particles with the particle size of 5-15um
5 portions of polyethylene glycol
50 parts of dichloromethane;
(2) Putting the coated film base material obtained in the step (1) into an oven, controlling the temperature between 80 and 100 ℃, and carrying out heat treatment for 5 hours to obtain a film base body with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Al layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate at 60-70 ℃, and plating MaF on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology 2 And (3) a layer.
In a fourth embodiment, a method of making a reflective film includes the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical grade PET 16.5 parts
PS 3.5 parts
8 portions of PC-g-PS
Rutile type titanium dioxide particle 3.8 parts, particle diameter 5-15um
Polyethylene glycol 7.5 parts
53 parts of dichloromethane;
(2) Putting the coated film substrate obtained in the step (1) into an oven, controlling the temperature between 80 and 100 ℃, and carrying out heat treatment for 6 hours to obtain a film matrix with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Ag layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate at 60-70 ℃, and plating SiO on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology 2 And (3) a layer.
In a fifth embodiment, a method for making a reflective film includes the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical-grade PMMA 16 parts
PS 4 parts
3 portions of PC-g-PS
2.8 parts of rutile type titanium dioxide particles with the particle size of 5-15um
Polyethylene glycol 7 parts
66 parts of N, N-dimethylformamide;
(2) Putting the coated film substrate obtained in the step (1) into an oven, controlling the temperature between 80 and 100 ℃, and carrying out heat treatment for 2.5 hours to obtain a film matrix with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Al layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating an SiO layer on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology.
In a sixth embodiment, a method of making a reflective film includes:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
optical grade PET 17 parts
PS 5.5 parts
7 parts of PS-b-PC
4 parts of rutile type titanium dioxide particles with the particle diameter of 5-15um
6.5 parts of sodium oleate
62 parts of dichloroethane;
(2) Putting the coated film substrate obtained in the step (1) into an oven, controlling the temperature to be between 80 and 100 ℃, and carrying out heat treatment for 5.5 hours to obtain a film matrix with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating an Ag layer on the reflective coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate at 60-70 ℃, and plating MaF on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology 2 And (3) a layer.
Comparative example: uncoated UX-188 reflective films are commercially available. Luminance measurements were performed on inventive examples and comparative examples: the sample brightness was measured with BM-7A, test environment: 23 ± 2 ℃,55 ± 5% rh, test conditions: sample length (40cm 25cm), measurement points: 1. (0.1L, 0.1W); 2. (0.9L, 0.1W); 3. (0.1l, 0.5w); 4. (0.5l, 0.5w); (0.9L, 0.5W); 6. (0.1L, 0.9W); 7. (0.5L, 0.9W); 8. (0.9L, 0.9W).
Defining the central luminance as the luminance value at the 4 th point, the example and the comparative example were placed in the same backlight module, respectively, and the luminance thereof was tested, and the results are shown in the following table:
the above test data shows that the reflective film provided by the present invention can improve the central brightness and the average brightness of the backlight module assembled above the reflective film, and make the brightness of the backlight module more uniform.
Claims (2)
1. A method for preparing a reflective film, comprising the steps of:
(1) Coating the modulated reflective glue coating on the corona surface of the PC substrate subjected to corona treatment, wherein the reflective glue coating comprises the following components in parts by mass:
14-17 parts of polar polymer
3.5-6 parts of non-polar polymer
3-9 parts of compatilizer
2.5-4 parts of inorganic particles with the particle size of 5-15 mu m
5-8 parts of dispersant
50-66 parts of a solvent;
(2) Putting the coated film substrate obtained in the step (1) into an oven, and carrying out heat treatment for 2-6h at 80-100 ℃ to obtain a film matrix with a reflective coating;
(3) Controlling the temperature of the film substrate at 60-70 ℃, and plating a metal reflecting layer on the reflecting coating of the film substrate by adopting an ion beam assisted deposition technology to obtain a second film substrate;
(4) Controlling the temperature of the second film substrate to be 60-70 ℃, and plating an inorganic protective layer on the metal reflecting layer of the second film substrate by adopting an ion beam assisted deposition technology;
the polar polymer is one of optical-grade PMMA and optical-grade PET;
the non-polar polymer is PS;
the compatilizer is one of PS-g-PMMA, PS-b-PMMA, PC-g-PS and PS-b-PC;
the inorganic particles are rutile titanium dioxide particles;
the dispersing agent is one of sodium oleate, polyvinyl butyral and polyethylene glycol;
the solvent is one of tetrahydrofuran, trichloromethane, dichloromethane, N-dimethylformamide and dichloroethane;
the metal reflecting layer is Al or Ag.
2. The method for producing a reflective film according to claim 1, wherein: the inorganic protective layer is SiO 2 And SiO.
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| CN202111194849.3A CN113912890B (en) | 2021-10-14 | 2021-10-14 | Preparation method of reflecting film |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111194849.3A CN113912890B (en) | 2021-10-14 | 2021-10-14 | Preparation method of reflecting film |
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| CN113912890A CN113912890A (en) | 2022-01-11 |
| CN113912890B true CN113912890B (en) | 2022-12-27 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10730A (en) * | 1996-06-17 | 1998-01-06 | Toyo Ink Mfg Co Ltd | Light reflecting film |
| JP2003084110A (en) * | 2000-12-14 | 2003-03-19 | Mitsui Chemicals Inc | Reflector, side light type back light device and reflector substrate |
| WO2009051256A1 (en) * | 2007-10-18 | 2009-04-23 | Sumitomo Seika Chemicals Co., Ltd. | Light diffusing agent |
| CN103472511A (en) * | 2013-09-16 | 2013-12-25 | 宁波东旭成新材料科技有限公司 | High-stiffness reflecting film and manufacturing method thereof |
| CN106680919A (en) * | 2015-11-06 | 2017-05-17 | 宁波长阳科技股份有限公司 | High-luminance diffusion silver-plated reflective film and preparation method thereof |
-
2021
- 2021-10-14 CN CN202111194849.3A patent/CN113912890B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10730A (en) * | 1996-06-17 | 1998-01-06 | Toyo Ink Mfg Co Ltd | Light reflecting film |
| JP2003084110A (en) * | 2000-12-14 | 2003-03-19 | Mitsui Chemicals Inc | Reflector, side light type back light device and reflector substrate |
| WO2009051256A1 (en) * | 2007-10-18 | 2009-04-23 | Sumitomo Seika Chemicals Co., Ltd. | Light diffusing agent |
| CN103472511A (en) * | 2013-09-16 | 2013-12-25 | 宁波东旭成新材料科技有限公司 | High-stiffness reflecting film and manufacturing method thereof |
| CN106680919A (en) * | 2015-11-06 | 2017-05-17 | 宁波长阳科技股份有限公司 | High-luminance diffusion silver-plated reflective film and preparation method thereof |
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| CN113912890A (en) | 2022-01-11 |
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